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2019-09-06 23:53:10 +08:00
commit f0ef89dfbb
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65
vendor/swoole/include/rbtree.h vendored Executable file
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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| license@swoole.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tianfeng Han <mikan.tenny@gmail.com> |
+----------------------------------------------------------------------+
*/
#ifndef _NGX_RBTREE_H_INCLUDED_
#define _NGX_RBTREE_H_INCLUDED_
#include <stdint.h>
typedef struct swRbtree_node_s swRbtree_node;
struct swRbtree_node_s
{
uint32_t key;
void *value;
swRbtree_node *left;
swRbtree_node *right;
swRbtree_node *parent;
char color;
};
typedef struct swRbtree_s swRbtree;
struct swRbtree_s
{
swRbtree_node *root;
swRbtree_node *sentinel;
};
swRbtree* swRbtree_new();
void swRbtree_free(swRbtree*);
void swRbtree_insert(swRbtree *tree, uint32_t key, void *value);
void swRbtree_delete(swRbtree *tree, uint32_t key);
void *swRbtree_find(swRbtree *tree, uint32_t key);
#define swRbtree_red(node) ((node)->color = 1)
#define swRbtree_black(node) ((node)->color = 0)
#define swRbtree_is_red(node) ((node)->color)
#define swRbtree_is_black(node) (!swRbtree_is_red(node))
#define swRbtree_copy_color(n1, n2) (n1->color = n2->color)
#define swRbtree_sentinel_init(node) swRbtree_black(node)
static inline swRbtree_node *swRbtree_min(swRbtree_node *node, swRbtree_node *sentinel)
{
while (node->left != sentinel)
{
node = node->left;
}
return node;
}
#endif